A criterion-related validity of 0.50 indicates that approximately ______ percent of
the variability of performance can be accounted for by the test scores.
a) 99.5
b) 50
c) 25
d) 10
C
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Historically speaking, "treatments" of psychological disorders tended to involve cruel practices such as exorcism and execution. This reflected the assumption that:
A) people were biologically programmed to do evil. B) people who behaved in strange ways were possessed by demons. C) only those patients, who have chances of recovery, should be provided treatment. D) patients who are released from mental hospitals could face a relapse.
Piaget based the six substages of sensorimotor development on ________
A) interviews with parents and children B) observations of a large sample of young children C) observations of his own three children D) field experiments with toddlers and preschoolers